Once the car had stopped, Sirius gave Harry a meaningful look, then quickly got out and walked toward Douglas.
"I told them everything you asked me to, without changing a single word. Where's Moony?"
As he spoke, he moved to put a hand on Douglas's shoulder.
Douglas quickly dodged aside and said with a look of distaste:
"Didn't I tell you to change into a proper suit? We're visiting University College London today as representatives of Hogwarts Secondary School. Dressed like that, you'll make people think we aren't a respectable school.
"Lupin went to Newbury. There's a good factory there, and he went ahead to make arrangements."
Sirius blinked and said with a smile:
"Respectable? As far as Muggles are concerned, are we a respectable school? Harry, hurry up."
After getting out, Harry took out the little flag and held it high. Once the young wizards saw Douglas, they all obediently followed behind him.
The whole group looked like a crowd of lower-secondary children with a few upper-secondary students tagging along. Fortunately, they had all been trained beforehand and knew to line up from tallest to shortest.
(In the United Kingdom, secondary school lasts five years, from ages 11-16, while Sixth Form, similar to upper secondary school in China, covers ages 16-18.)
Douglas addressed the group:
"Ladies and gentlemen, welcome to the first stop on our journey, University College London..."
At this point, he quietly used the Ear-to-Ear Communication Charm:
"Remember, we're from Hogwarts Secondary School in the Scottish Highlands. Today, our school has arranged for its outstanding students to visit University College London, which is also a university you hope to get into in the future..."
Beside him, Sirius suddenly asked:
"Douglas, I remember you saying you studied at a Muggle university after graduating from Hogwarts. Was this the